The Birimian Greenstone Belts of West Africa
July 2013 by Chris RalphThe country we were to visit was Burkina Faso, a small country about the same size of my home state of Nevada with about 10 times more people. The second day I was in Africa, we went out to the goldfields for the first time.
In 1983, some of the ore yielded more than 2,500 ounces of gold within 30 feet of the surface. The shoot pinched to a narrow vein.
Until just recently, platinum-group metals (PGMs), especially palladium, had been holding their own on the market. But, Russia has now resumed shipments and it has brought prices down.
These were the men who periodically picked up the gold amalgam from the tables and sluices in the dredge, processed it, and transported the gold ingots to the railroad express office in Alder. Their trustworthiness must have commanded a prominent wage.
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
Let’s take a look at diamonds and diamond mining and see how they form, how they are used beyond just jewelry, and what leads geologists to find diamond deposits.
Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...
The Bawl Mill • Ask the Experts • Ask the Experts • Study Confirms Mercury Levels Safe in California's Gold Country • All About Quartz—Part II • The Pearce Mineralized Area, Dragoon Mountains, Arizona • An Alaskan in the Lower 48 • Romancing the Rock • Placer Channel Sampling • The Oquirrh Mountains, Utah • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Record $11 Million Fine for California Mine